Tech Help:Samsung Flat-screen Issue
I am of no help but to say I share your frustration. I have an HG TV that was in, what I eventually found out, was display mode. My problem was that factory reset didn't fix it, it made it worse because that was what it was set to for floor panels, so you could see it in stores. Somehow in the brightness of the HG minds, they thought to patch it, in box. So when I reset it, I had to patch it, just to get it how it was in box, and THEN go into nine menus deep, and hold a button combination like it was Konami code, to unlock the full system information. Now that I know that, I know HOW it occurred, but for the life of me would take two hours to fix if it happened again.
I hope the link helped. If not, I hope you can get some remedy, especially if the TV is a daily device.